Monday, May 2, 2011

The Yankees will begin a series tonight in Detroit against the slumping Tigers. The brilliant Bartolo Colon is scheduled to take the mound against Justin Verlander. I did a preview of Verlander's stuff here on Opening Day, so check that out if you feel like it. So today, I'd instead like to look at two young relievers who have been impressing out of the Tiger bullpen recently: Brayan Villarreal (24 years old next week) and Al Alburquerque (24 until June). Some generic rate stats for both of them:

#

K Rate

BBHBP Rate

Swing Rate

Whiff Rate

Zone Rate

GB Rate

RV+

xRV+

Villarreal

209

.245

.075

.455

.242

.431

.355

104

89

Alburquerque

133

.485

.121

.376

.460

.451

.538

201

204

The two "plus" stats at the end are the run values, actual and expected, that I typically use, except they're put on a 100 scale with 100 being the theoretical league average. I say "theoretical" because these run values I'm using are out of date, so it's skewing the numbers a little bit.

Both guys could be defined as power-pitchers given that they miss bats (especially Alburquerque) and throw hard. Villarreal slings it from a three-quarters slot, while Alburquerque comes from over the top. They both throw a fastball, sinker, and slider and average 94-95 mph with their heaters. Villarreal's slider is hard, averaging 87 mph. Alburquerque's is at 84 and gets about two more inches of "drop" than Villarreal's does. For now, it would appear that Villarreal's best pitch is his four-seamer and Alburquerque's is his slider. Some metrics by pitch type:

#

Swing Rate

Whiff Rate

Zone Rate

Chase Rate

Watch Rate

Ball Rate

Villarreal

FF

83

.506

.286

.446

.370

.324

.277

Villarreal

SI

48

.438

.095

.417

.357

.450

.396

Villarreal

SL

78

.410

.281

.423

.267

.394

.410

Alburquerque

FF

26

.423

.000

.462

.286

.417

.423

Alburquerque

SI

28

.286

.000

.607

.091

.588

.321

Alburquerque

SL

79

.392

.742

.392

.396

.613

.354

So while batters have made contact on every swing off of Alburquerque's fastball, they have missed 23 out of 31 times against his slider. Wow. Also notice that Alburquerque is throwing his slider a lot more than his fastball. Positively Marmolian.

Joaquin Benoit has not been good at all after signing a big contract to be the team's eighth inning pitcher (sound familiar?), and I can't help but wonder if these guys will start getting some of Benoit's innings soon.